Sand cutting



G. C. FATSCHER.

SAND CUTTING APPLIANCE. APPLICATION FILED MAY 2. m1.

1 ,3 1 6 ,884; Patented Sept. 23, 1919.

2 SHEETS-SHEET l- G. C. FATSCHER.

SAND CUTHNG APPLIANCE.

APPLICATION men MAY 2. I917.

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SAND-CUTTING- APPLIANCE.

Specification of Letters Patent.

Patented Sept. 23, 1919.

Application filed May 2, 1917. Serial No. 165,819.

To all whom it may concern:

Be it known that I, GEORGE C. FATSOHER, a subject of the Emperor of Germany, residing at No. 1568 Warren road, city of Lakewood, in the county of Cuyahoga and State of Ohio, have invented a new and useful Improvement in Sand-Cutting Appliances, of which'the following is a specification, the principle of the invention being herein explained and the best mode in which I have contemplated applying that principle, so as to distinguish it from other inventions;

This invention pertains to a sand cutting appliance and the method of its use, both particularly adapted according to the exemplification disclosed by the drawings to molders sand as employed in foundries.

After the sand has served its purpose of holding the shape of a certain pattern and the casting has been poured it becomes necessary not only to remove the sand from the molders flask but to reseparate it into its component particles and to remix the same so that it has a more homogeneous character, as for example, its degree of moisture. It is still common practice to dump molders sand onto a heap and to then mix. the same by repeated shovel turnovers. One object of my invention is to cut or loosen the sand into its integral particles while the same is in a molders flask. Another object is to provide pneumatic conveyance and distribution thereof. A further object is to effect a continuity in the operation of cutting and conveying the same and to make provision for depositing the same upon one or more molding benches.

With the foregoing and other objects in view the invention consists of the novel construction, combination and arrangement of parts as hereinafter more specifically described and illustrated in the accompanying drawings, wherein is shown an embodiment of the invention, but it is to be understood that changes, variations and modifications can be resorted to which come within the scope of the claims hereunto appended.

Adverting t0 the drawings:

Figure I is an elevation showing an arrangement of parts embodying my invention, and the manner of putting the same into practice.

Fig. 11 is mainly an enlarged section of the principal detail which features my invention, some of the parts being shown in elevation.

Fig. III is an end view of one extremity of Fig. II.

In Fig. I, I have shown a molders flask 1 and. bench 2 separated a suitable distance.

Supported above, in any approved manner,

which is provided with a driving pulley 11..

Interiorly the hopper has a partition or baflle 12 extending upwardly a given distance upon the inlet opening 7 and higher up another transom bafiie 13 which is so positioned as to be interposed between the inlet 7 and outlet 8.

A pneumatic nozzle 14 is provided with a head 15 in screw threaded connection therewith, such head having an enlarged conical nose 16 fashioned with equispaced apertures 17 such that a spider structure 18 composed of four divaricating extensions is formed. It is understood that the nozzle 14 as well as its head 15 are hollow and that the apertures 17 are in open communication therethrough. The nozzle 14 is r0- tatably mounted in two sets of ball bearings 19 and carries, fixed to itself between such bearings, a turbine rotor 20 movable in an annular chamber 21 with one side of which a flared impulse inlet 22 communicates. Any suitable motive fluid, such as compressed air, may be fed through a hose 23 to such inlet 22. Fixed in any feasible manner to one side of the supporting casing of the nozzle 14 is a socket 24 in which a handle 25 is secured. A portion 26 of the nozzle 14 extends beyond the bearings 19 and carries a disk 27 movable between ball bearings 28 which are held in place by a clamping structure 29, one part of which carries a nipple 30 so as to be in open communication with the end 26 of the nozzle. A flexible hose 31 connects the inlet 7 with the nipple 30 to which it is shown attached by means of a hose plant 32.

creation o my nven n s a ellends impulse to the rotor 20 and causes it to be very rapidly revolved and there iore likewise the nose 18 which is to be presented to the collection of sand which it is purposed to remove. Meanwhile the suction effect should have been created in the tube 31 in response to starting of the fan 10. Owing to the formation of the nose as described, the same eflectually loosens the sand and causes it to be drawn through the nozzle with a whirling motion whence it is conducted to the hopper 3 and caused vioently t imp e aga n h b ffl which r sh de i gr s r u h th out let .8. In con equence it settles gravitationany in o he bo tom 4 T c fig a of the head of the nozzle is designed to more effe tual y cu the san n en b into e withdrawn through the nozzle as will be evident to those familiar with. the art. lclaim V X A sand ut ingepr e mp i n a a rotary suction nozzle, having an inlet open-.

tin; and a conical spider nose ha g Poltipns presented obliquely with referenceto its xis A's n putt ng app n ompr nga rotor-y suctionnozzle. having an enlarged centrally pointedend provided with slots blique relative t the ax s of o a on- 3. A sand cutting appliance comprising a hollow member l ming one end open, suction means n enn 'e l i h h t r n a ro r searedtn 'iretn ear new in carried by said member, and means for impinging a motive fluid against said rotor.

4. A sand cutting appliance comprising a rotatable nozzle provided with a conical nose having a series of slots therein,

whereby a spider structure is formed and means for rotating said nozzle.

5. A sand cutting appliance comprising a hollow rotatable nozzle provided with a'solidly pointed end structure of spider formation whereby a series of slot inlets divaricating from its solid center are produced, means for rotating said nozzle, and means for creating a suction efiect therethrough.

,6. A sand cutting appliance comprising the combination of a receptacle having an inlet and an outlet, suction Imeans operatively connected with said outlet, a portable rotary suctionnozzle flexibly connected with said inlet and having, an open nose,

a baiiie. interposed between said inlet and GEQRGE 0- FATSQH R- five. we a le tre sxessies the wean n i 5 m, Wesnes ei i- I a 1 

